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SN74HC165A: 输出数据乱跳

Part Number: SN74HC165A
Other Parts Discussed in Thread: SN74HC165

用SN74HC165D时发现输出数据乱跳,高低变化不受并行输入控制了,PL,CP,CE这几个引脚配置都是按datasheet上来配置的。